BRAX X 2000.2 GRAPHIC EDITIONS User manual

X 2000.2
X 2400.2
GRAPHIC EDITIONS
BEDIENUNGSANLEITUNG
INSTRUCTION MANUAL

9
Dear customer
Congratulations on your purchase of this high-quality BRAX product.
You may be interested to know that we have been working now for 23 years
in the development and production of top-quality high-end hifi components.
Within just a few years, we have succeeded in giving the BRAX brandname
world wide recognition. Our efforts in creating these quality products have
also been rewarded through the award of various honours by the major car
audio magazines, not to mention numerous world wide innovation prizes.
In keeping with the tradition thus established, we have again provided our
new BRAX amplifiers with everything they require in order to assume their
rightful position as the pace-setters in the market. Offering the maximum
possible level of engineering quality, they combine outstanding sound repro-
duction, solid craftmanship and the noblest of materials to provide a com-
pletely new dimension in individuality.
We are proud to offer you this high-end product MADE IN GERMANY. and
wish you many hours of enjoyment with your new BRAX amplifier.
AUDIOTEC FISCHER GMBH
Heinz Fischer
Page
Introduction / Contents 9
Installation X2000.2 / X2400.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Connection X2000.2 / X2400.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connection of the power supply X2000.2 / X2400.2 . . . . . . . . . . . . 10
Equipment features and control elements X2000.2 . . . . . . . . . 11 - 12
Connection of speaker- and power cables X2000.2 . . . . . . . . . . . . . 12
Equipment features and control elements X2400.2 . . . . . . . . . . 13 - 14
Connection of speaker- and power cables X2400.2 . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Contents
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Installation X2000.2 / X2400.2 / GRAPHIC EDITIONS
In order to maintain the quality of this product and ensure safe opera-
tion, we recommend that our amplifiers be installed by an authorized
BRAX dealer. Installation by a qualified and accredited technician will
qualify you for our special lifetime warranty.Your BRAX dealer will also
assist you in selecting the correct additional components and in ensuring
that proper consideration is given to all the safety and sound-related
aspects.
Important:
Before commencing installation, disconnect the car battery at
the negative terminal. Once again we would urge you to have the
installation work carried out by a specialist, as verification of correct
installation and connection of the unit is a prerequisite for warranty
cover of the BRAX by AUDIOTEC FISCHER Germany.
1. Install your amplifier at a dry location in the car where
there is suffi-
cient air circulation to ensure adequate cooling
of the equipment.Also ensu-
re that there is sufficient clearance
available for making the cable connec-
tions and operating the controls.
2. For safety reasons, the amplifier must be secured in a professional man-
ner.This is performed by means of four fixing screws (see Fig. 1) screwed
into a mounting surface offering sufficient retention and stability. Before
drilling the holes for the screws, carefully examine the area around the
installation position and make sure that there are no electrical cables or
components, hydraulic brake lines or any part of the petrol tank located
behind the mounting surface - otherwise these could be damaged.You
should be aware of the fact that such components may also be concea-
led in the double-skin trim panels/moldings.
Fig. 1
Installation in the car

10
Connection X2000.2 / X2400.2 / GRAPHIC EDITIONS
The above amplifier models may only be installed in motor vehicles
which have a 12-volt negative terminal connected to the chassis ground.
Any other system could cause damage to the amplifier and the electrical
system of the vehicle.
The positive lead from the battery for the complete system should be
provided with a line fuse at a distance of max. 30 cm from the battery.
The amperage rating of the fuse is calculated from the maximum total
current input of the car/vehicle hifi system.
Never bridge fuses or replace them with fuses with a higher
amperage rating as such actions could lead to the destruction
both of the amplifier and the entire electrical system of the
vehicle.
As already mentioned, the negative lead from the vehicle battery to the
chassis should be disconnected in order to prevent the occurence of
short-circuiting. Install the cabling in a manner which precludes any dan-
ger of the leads being exposed to shear, crushing or rupture forces. If
there are sharp edges in the vicinity (e.g holes in the body work), all the
cables must be cushioned and protected to prevent fraying.
Never lay the power supply cables adjacent to leads and lines
connecting other vehicle equipment (fan motors, fire detection
modules, gas/petrol lines etc.).
In order to avoid cross-talk distortion, audio cables should never be laid
together with electrical leads (with the exception of the screened BRAX
POWER TRAX power supply cables).
In order to ensure safe installation, use only high-quality connection
materials, and comply with the recommended minimum cross sec-
tions/gauge values of the cables for the individual amplifier modules.
As an aid to calculating the cross-sectional requirements of power cables
which are not longer than 5 m, we advise a figure of max. 5 A per mm2.
For the X 1000 and X 1400 BRAX amplifiers described and for the X
2000 and X 2400 a minimum cross section of 20 mm2/gauge 5 for the
positive 12-volt supply lead and for the ground (chassis) cable. In order
to ensure optimum sound quality and interference-free music reproduc-
tion, we recommend that installation be performed with BRAX POWER
TRAX power supply cables.The remote lead should have a cross section
of at least 1 mm2.
Connection of the power supply X2000.2 / X2400.2 / GRAPHIC EDITIONS
1Control lead (Remote)
Positive (+) 12V cable via fuse to battery
Ground cable
Positive (+) connection BRAX Power Stabilizer
Negative (-) connection BRAX Power Stabilizer
2
3
4
5
The +12 volt power supply cable (see Fig. 2) should be connected direct-
ly to the positive terminal of the battery. A fuse should also be provided at
a distance of max. 30 cm from the battery.The amperage rating of the fuse
is calculated from the maximum total current input of the car/vehicle hifi
system.
The fuse holder appertaining to the amplifier is supplied with the amplifier
module.This must be installed at a distance of max. 20 cm from the positi-
ve terminal of the amplifier and equipped with the original BRAX fuse pro-
vided.
The fuse ratings are: for amplifier X 1000 = 60 A,
for amplifier X 1400 = 60 A,
for amplifier X 2000 = 100 A,
for amplifier X 2400 = 100 A.
Failure to comply nullifies the warranty.
The ground (chassis) cable (see Fig. 2) should be connected to the cen-
tral ground reference point (this is located where the negative terminal
of the battery is grounded at the metal chassis of the vehicle), or to a
bright bare-metal location on the vehicle chassis, i.e. an area which has
been cleaned of all paint residues. It must be ensured that resistance
values to the power sources (alternator, generator, battery) are minimi-
zed as excessive resistance can appreciably affect the audio quality and
dynamics of the system.The „Remote“ cable (see Fig. 2) is connected to
the „Remote“ connection or the automatic antenna connection of the
control unit (tuner/radio).The antenna connection is only activated if the
control unit is switched ON. This ensures that, with the control unit
switched off, the amplifier is also switched off to safe the battery.
Fig. 2
1
23
4
5

1-2 Signal Input
Signal input for the right (1) and left (2) channels. Both inputs are
marked red. Connect using an RCA cable with cinch connectors.
3 Speaker Terminals
The speakers are connected here in accordance with the required con-
figuration (see speaker connections). Cable sizes of up to 6 mm2/gauge 10
can be employed for this purpose.
4 Input Sensitivity Level Controller
The level controller enables the input sensitivity of the BRAX amplifiers
to be adapted to the output voltage of the connected control unit
(radio/tuner). This controller is not a volume control. Optimum
setting of the level controller ensures you maximum audio enjoyment
without those all-too-common audible distortions and overshoot phe-
nomena which have such an adverse effect on sound quality.
5 CPS-Colour Protection System
This shows the operating status of your amplifiers.When the amplifier
module is switched on, both LED’s change to green.This means that both
channels of the module are operational. In the event of a malfunction in
the amplifier module or a short circuit at the output, the LED for the
defective or short-circuited channel switches to red. In the event of an
amplifier channel overheating, the associated LED switches to red.
Green = operational; Red = malfunction in the amplifier, short circuit
at the speaker output; overheating.
If the amplifier has tripped owing to overheating, it may take some time,
depending on the ambient temperature, before it is re-activated.
6 Power Supply Terminal
Terminal for connecting the positive 12-volt power supply cable, the
ground/chassis lead and the remote lead.
7 External Connection for a BRAX Power Stabilizer
8 Power ON and Protection LEDs
The power ON LED lights up green when the amplifier is switched on. In
the event of one of the two channels overheating, the LED switches to red.
9 Mono-Stereo Selector
To set the operating mode of the amplifier.
Position 1 - STEREO: If the amplifier operates in 2-channel mode the switch
has to be set on stereo position and both inputs (1 and 2) must be used.
Position 2 - BRIDGED-STEREO: If the amplifier operates in Mono mode the
switch has to be set on Bridged position. In this case both channels works as one
(Mono) channel. On the position „Bridged“ both inputs A and B (1 and 2)
must be used.
Position 3 - BRIDGED-MONO/CHL: As on position „BRIDGED-STEREO”
the amplifier operates in Mono mode where both channels work as one (Mono)
channel. In position „BRIDGED-MONO/CHL“ only input L (2) is used.
This is necessary when only one mono signal is available.
10-11 Slope Selector - 12dB/24 dB
To switch the crossover slope from 12 dB/octave auf 24 dB/octave.
12 Lowpass/Bandpass Frequency Selector
To switch the control range of the potentiometer (14) from 15 Hz to 300 Hz and
from 250 Hz to 4500 Hz.
Example: Lowpass 15 Hz - 300 Hz 12dB/octave
11
Equipment features and control elements X2000.2 / GRAPHIC EDITION
8
7
6
10
912
14
16
15
13
11
Fig. 7
Fig. 5
Fig. 4
Fig. 3
15 Hz 300 Hz
Hz
variabel
4
3
5
43
15
2

12
Important!
Never connect the speaker cables to the vehicle chassis. This
can destroy your amplifier. Ensure that all the speaker systems
are connected in-phase, i.e. plus to plus and minus to minus.
The positive terminal is indicated on most speakers. In addi-
tion, the amplifiers may be operated in both the stereo(see Fig.
11) and mono (bridge) modes (see Fig. 12).
The mono/stereo selector switch is located at the bottom and
can be operated once the metal cover has been removed.The
function of the switch is described on a label at the bottom of
the amplifier.
Connection of speaker- and power cables X2000.2 / GRAPHIC EDITION
2-Twin-channel/Stereo mode Switch 9 in position 1
Mono mode with stereo signal Switch 9 in position 2
Mono input
Example: Lowpass 250 Hz - 4500 Hz 12dB/octave
13 Highpass Frequency Selector
To switch the control range of the potentiometer (15) from 15 Hz to 300 Hz and
from 250 Hz to 4500 Hz.
Example: Highpass 15 Hz - 300 Hz 12dB/Oktave
Example: Highpass 250 Hz - 4500 Hz 12dB/octave
14 Control for frequency range Lowpass
To adjust the crossover frequency from 15 Hz to 4,5 kHz.
15 Control for frequency range Highpass
To adjust the crossover frequency from 15 Hz to 4,5 kHz.
16
Selector for Lowpass/Bandpass, Linear/Full Range) and Highpass
To switch the internal active crossover to Highpass / Full Range (linear) or
Lowpass.
If this selector is set on Highpass, the frequency range can be adjusted with
selector 13 and the exact frequency can be adjusted with control 15. In addi-
tion the slope can be adjusted with selector 11.
At selector position Lowpass/Bandpass the Highpass is always active. That
means a Bandpass is built in any case. With selector 13 and control 15 adjust
the Highpass and with selector 13 and control 14 adjust the Lowpass. Thus
every desired Bandpass between 15 Hz and 4500 Hz can be adjusted.
Caution! To avoid a loss of sound pressure make sure that the cross-
over frequencies of High- and Lowpass are separated by 2 octaves
when building a Bandpass.
That means: If the lowpass signal is adjusted to 320 Hz the highpass should be
adjusted 2 octaves lower on approx. 80 Hz. (1 octave = double frequency or half
frequency)
If a subwoofer is connected we recommend to use highpass control 20
as variable subsonic filter or to turn control 20 counter-clockwise to
15 Hz to get a subsonic filter.
Hz5K2K
variabel
4,5 kHz
2
50
Hz
15 Hz 300 Hz
Hz
variabel
2K 5K Hz
250 Hz 4
,
5 kHz
variable
Mono mode with mono signal Switch 9 in posiition 3
Fig. 11
Fig. 10
Fig. 9
Fig. 8
Fig. 12
Fig. 13

13
Equipment features and control elements X2400.2 / GRAPHIC EDITION
7 Power Supply Terminal
Terminal for connecting the positive 12-volt power supply cable, the
ground/chassis lead and the remote lead.
8 External Connection for a BRAX Power Stabilizer
9 Power ON and Protection LEDs
The power ON LED lights up green when the amplifier is switched on. In
the event of one of the two channels overheating, the LED switches to red.
10-11 Slope Selector - 12dB/24 dB
To switch the crossover slope from 12 dB/octave auf 24 dB/octave.
12 Lowpass/Bandpass Frequency Selector
To switch the control range of the potentiometer (14) from 15 Hz to 300 Hz and
from 250 Hz to 4500 Hz.
Examples: see page 11
13 Highpass Frequency Selector
To switch the control range of the potentiometer (15) from 15 Hz to 300 Hz and
from 250 Hz to 4500 Hz.
Examples: see page 12
14 Control for frequency range Lowpass
To adjust the crossover frequency from 15 Hz to 4,5 kHz.
15 Control for frequency range Highpass
To adjust the crossover frequency from 15 Hz to 4,5 kHz.
16
Selector for Lowpass/Bandpass, Linear/Full Range) and Highpass
To switch the internal active crossover to Highpass / Full Range (linear) or
Lowpass.
If this selector is set on Highpass, the frequency range can be adjusted with
selector 13 and the exact frequency can be adjusted with control 15. In addi-
tion the slope can be adjusted with selector 11.
At selector position Lowpass/Bandpass the Highpass is always active. That
means a Bandpass is built in any case. With selector 13 and control 15 adjust
the Highpass and with control 14 adjust the Lowpass. Thus every desired
Bandpass between 15 Hz and 6000 Hz can be adjusted.
Caution! To avoid a loss of sound pressure make sure that the crosso-
ver frequencies of High- and Lowpass are separated by 2 octaves when
building a Bandpass.
That means: If the lowpass signal is adjusted to 320 Hz the highpass should be
adjusted 2 octaves lower on approx. 80 Hz. (1 octave = double frequency or half
frequency)
1-2 Signal Input
Signal input for the right (1) and left (2) channels. Both inputs are
marked red. Connect using an RCA cable with cinch connectors.
3-4 Speaker Terminals
The speakers are connected here in accordance with the required con-
figuration (see speaker connections). Cable sizes of up to 6 mm2/gauge 10
can be employed for this purpose.
5 CPS-Colour Protection System
This shows the operating status of your amplifiers.When the amplifier
module is switched on, both LED’s change to green.This means that both
channels of the module are operational. In the event of a malfunction in
the amplifier module or a short circuit at the output or overheating, the
LED for the defective or short-circuited channel switches to red.
Green = in operation; Red = malfunction in the amplifier, short circuit
at the speaker output; overheating.
If the amplifier has tripped owing to overheating, it may take some time,
depending on the ambient temperature, before it is re-activated.
6 Input Sensitivity Level Controllers
The level controllers enable the input sensitivity of the BRAX amplifiers
to be adapted to the output voltage of the connected control unit
(radio/tuner). These controllers are not volume controls.
Optimum setting of the level controller ensures you maximum audio
enjoyment without those all-too-common audible distortions and overs-
hoot phenomena which have such an adverse effect on sound quality.
9
8
7
314
2
55
12 dB/oct.
24 dB/oct.
FREQUENCY ADJUST
12 dB/oct.
24 dB/oct.
250 Hz - 4,5 kHz
15 Hz - 300 Hz
HIGHPASS
FULL RANGE
LOWPASS / BP
LOWPASS HIGHPASS
250 Hz - 4,5 kHz
15 Hz - 300 Hz
FREQUENCY ADJUST
10
12
14
16
15
13
11
6
6
6
6
Fig. 16
Fig. 15
Fig. 14
Fig. 17

14
SPEAKER FRONT SPEAKER REAR
SPEAKER REARSPEAKER FRONT
LEFT RIGHT
MONO
LEFT RIGHT
MONO
FRONT
REAR
INPUT
R
L
Connection of speaker- and power cables X2400.2 / GRAPHIC EDITION
Important!
Never connect the speaker cables to the vehicle chassis. This can
destroy your amplifier. Ensure that all the speaker systems are con-
nected in-phase, i.e. plus to plus and minus to minus.The positive ter-
minal is indicated on most speakers. In addition, the amplifiers may be
operated in the stereo(see Fig. 22 / 23), 3-channel (see fig. 20 / 21) and
4-channel modes (see Fig. 19).
The mono/stereo selector switch is located at the bottom and can be
operated once the metal cover has been removed.The function of the
switch (stereo or mono) is described on a label at the bottom of the
amplifier (see fig. 18)
Fig. 18 Mono-Stereo Selector
To set the operating mode of the amplifier.
Position 1 - STEREO: If the amplifier operates in 4-channel mode the switch
has to be set on “stereo” (1) position and both inputs (1 and 2) are used.
Position 2 - MONO/BRIDGED: If the amplifier is operated in mono mode
with the front and rear channels the switch of either channel has to be set to the
„Bridged-Stereo“ position (2). In this mode both channels work as one
(Mono
Rear or Mono Front). In position „Bridged-Stereo“ both inputs (1 and 2)
of either bridged channel pair must be used.
Position 3 - BRIDGED-MONO/CHR: As on position „BRIDGED-STEREO”
the amplifier operates in Mono mode where both channels work as one (Mono)
channel. In position „BRIDGED-MONO/CHR“ only input L (2) is used.
This is necessary when only one mono signal is available.
4-channel mode
SPEAKER FRONT SPEAKER REAR
SPEAKER REARSPEAKER FRONT
LEFT RIGHT
MONO
LEFT RIGHT
MONO
FRONT
REAR
INPUT
R
L
SPEAKER FRONT SPEAKER REAR
SPEAKER REARSPEAKER FRONT
LEFT RIGHT
MONO
LEFT RIGHT
MONO
FRONT
REAR
INPUT
R
L
SPEAKER FRONT SPEAKER REAR
SPEAKER REARSPEAKER FRONT
LEFT RIGHT
MONO
LEFT RIGHT
MONO
FRONT
REAR
INPUT
R
L
SPEAKER FRONT SPEAKER REAR
SPEAKER REARSPEAKER FRONT
LEFT RIGHT
MONO
LEFT RIGHT
MONO
FRONT
REAR
INPUT
R
L
2-channel mode with woofer mono signal
2-channel mode with woofer stereo signal
3-channel mode with woofer mono signal
3-channel mode with woofer stereo signal Fig. 23
Fig. 22
Fig. 21
Fig. 20
Fig. 19
If a subwoofer is connected we recommend to use highpass control 20
as variable subsonic filter or to turn control 20 counter-clockwise to
15 Hz to get a subsonic filter.
Switches are located at
the boottom of the
amplifier
Fig. 18

15
Please consult your dealer in relation to all other installation problems.
Once again we would ask you to have your dealer perform the installation work. He will be able to guarantee to you that this
high-quality amplifier has been correctly installed. Moreover, verification of correct installation by specialist is a prerequisite for
the lifetime warranty of your amplifier.
Troubleshooting
Technical Specifications
X2000.2 X2400.2 X2000.2 X2400.2
GRAPHIC EDITION GRAPHIC EDITION
Continuous power rating
at 4 Ohm per channel 2 x 190 Watts 4 x 110 Watts 2 x 265 Watts 4 x 135 Watts
at 2 Ohm per channel 2 x 370 Watts 4 x 200 Watts 2 x 440 Watts 4 x 235 Watts
bridged into 4 Ohm load 1 x 740 Watts 2 x 400 Watts 1 x 880 Watts 2 x 470 Watts
Total harmonic distortion (THD) < 0,002% < 0,002% < 0,001% <0,001%
Signal to noise ratio > 105 dB > 105 dB > 110 dB >110dB
Damping factor at 4 ohms > 400 > 400 >600 >400
Frequency response
20 Hz-20 kHz, +/- 0,2 dB 20 Hz-20 kHz, +/- 0,2 dB 20 Hz-20 kHz, +/- 0,2 dB 20 Hz-20 kHz, +/- 0,2 dB
TIM Distortion < 0,016 % < 0,014 % < 0,009 % < 0,009 %
Input Sensivity 300 mV-7,5 V 300 mV-7,5 V 300 mV-7,5 V 300 mV-7,5 V
External fuse size 100 A 100 A 100 A 100 A
Input impedance 10 kOhms 10 kOhms 10 kOhms 10 kOhms
Dimensions (H x W x D) in mm 53 x 238 x 470 53 x 238 x 470 53 x 238 x 473 53 x 238 x 473
Weight net. 7,4 kg 7,4 kg 8,2 kg 8,2 kg
SYMPTOM
The amplifier cannot
be switched on.
LEDs light up green
but no sound can be
heard.
Only one channel is
operating.
Interference noise
from the engine.
REMEDIES
Check the power supply fuses and cabling.
Check the connection to the chassis metal
Check the 12-volt remote output of your control unit (radio/tuner).
Check that all the cables are properly inserted or screw-fixed.
Check the wiring and replace if necessary.
Check the wiring connections, or swap the channels around.
Turn the amplifier off and allow it to cool for a good while.Then switch it
on again. If the LED is still showing red, consult your dealer.
Check the speaker wires and the speakers themselves for short-circuiting,
and rectify as necessary.
Replace the defective speaker with a new one.
Check the connections (screen/shield).
Replace the cable with screened BRAX POWER TRAX cable. Consult your
dealer.
Select an optimum central ground point to serve the entire power supply
system of your vehicle, including the control unit (radio/tuner).
POSSIBLE CAUSES
12-volt positive supply lead line interrupted.
Amplifier not correctly connected to ground/chassis.
Power supply to the remote terminal interrupted.
The cinch input cables are not inserted, or the speakers
are not connected.
There is a faulty connection between the RCA terminal
and the control unit.
One channel may not be properly connected to the con-
trol unit or speaker.
One channel has overheated - LED lights up red.
Speaker wiring is faulty (short circuit between the wires
or with the chassis of the vehicle); LED lights up red.
One speaker is faulty.
Parasitics in the cinch cable.
Parasitics in the power supply cabling.
Feedback interference from the chassis to the control
unit (radio/tuner).

AUDIOTEC FISCHER GmbH
Hünegräben 26
57392 Schmallenberg/Germany
Tel.: [phone]
Fax: [phone]
[e-mail]
www.audiotec-fischer.com